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Home >> BMW >> 2018 >> M4 2D Convertible, Standard Trans >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brakes - Repair -- M4 (F82 & F83) >> 34 00 Brakes, General Information >> Marking brake function check

Marking brake function check

IMPORTANT: Follow instructions for BRAKE TESTING ON TEST STAND .
NOTE: If deviations are identified during the following check, the parking brake must be adjusted:

Drive vehicle onto brake test stand

Warm up brakes.

Check parking brake.

0th tooth (handbrake released): Vehicles with manual transmission: Shift lever in neutral position.
Vehicles with automatic transmission: Selector lever in selector lever position "N".
  • Without locking differential ≤150 N.
  • With locking differential ≤ 200 N (possibly odd display).
1st tooth: No increase in braking force with regard to 0th tooth. Indicator lamp can be lit.
2nd tooth: Indicator lamp must be lit.
3rd tooth: Increase in braking force.
5th tooth: The brake force display must have reached ≥ 400 N.

Checking brake force differential at wheel: 

Apply parking brake until a wheel circumferential force (measured on brake test stand) of min. 1000 N is reached.

Max. permitted brake force differential right/left <l50 % (referred to greater brake value).

Braking with locked wheels must be possible with the parking brake.